I've got a 93 TA with a 700R4 tranny. I'm trying to get decent numbers on the dyno and good datalogs. I cant seem to keep the torque convertor locked up. I bring the rpm's up in 3rd and let the convertor lock up. By the way it is a 3600 stall. I bring the rpm up to about 3000 so it wont downshift and let er rip. It unlocks the convertor everytime. Am i doing something wrong? How do people keep there convertors locked during dyno pulls?